Oracle SQL tuning with Oracle SQLTXPLAIN / by Stelios Charalambides.

Format:

Book

Author/Creator:

Charalambides, Stelios.

Series:

Expert's voice in Oracle.

The expert's voice in Oracle

Language:

English

Subjects (All):

Oracle (Computer file).

SQL (Computer language program).

Database management.

Physical Description:

1 online resource (xxv, 317 pages) : illustrations (some color).

Edition:

1st ed. 2013.

Place of Publication:

Berkeley, CA : Apress, c2013.

Language Note:

English

System Details:

text file

Summary:

Oracle SQL Tuning with SQLTXPLAIN is a practical guide to SQL tuning the way Oracle's own experts do it, using a freely downloadable tool called SQLTXPLAIN. Using this simple tool you'll learn how to tune even the most complex SQL, and you'll learn to do it quickly, without the huge learning curve usually associated with tuning as a whole. Firmly based in real world problems, this book helps you reclaim system resources and avoid the most common bottleneck in overall performance, badly tuned SQL. You'll learn how the optimizer works, how to take advantage of its latest features, and when it's better to turn them off. Quickly tune any SQL statement no matter how complex. Build and tune test cases without affecting production. Use the latest tuning features with confidence.

Contents:

Introduction to SQLTXPLAIN

The cost-based optimizer environment

How object statistics can make your execution plan wrong

How skewness can make your execution times variable

Troubleshooting query transformations

Forcing execution plans through profiles

Adaptive cursor sharing

Dynamic sampling and cardinality feedback

Using SQLTXPLAIN with data guard physical standby databases

Comparing execution plans

Building good test cases

Using XPLORE to investigate unexpected plan changes

Trace files, TRCANLZR and modifying SQLT behavior

Running a health check

The final word.

Notes:

Includes index.

ISBN:

9781430248101

1430248106

OCLC:

840404455